2015 Subaru WRX STI: The Prodigal Son of Rally Let Loose, Again

The most rally friendly of the 25 Cars Worth Waiting For from 2015–2018.

CAR AND DRIVER

Apr 8, 2014

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After testing the new Subaru WRX [March 2014], we feel a certain giddy anticipation for the upcoming STI version, even if the STI’s carry-over powertrain sticks something of a pin in our excitement. No, the heart of Subaru’s STI isn’t based on the WRX’s new direct-injected FA engine. Instead, it gets a carry-over 2.5-liter EJ-series flat-four making the same 305 horsepower as last year. So, what makes the STI worth the wait? Like the regular WRX, the STI has a new platform. The new architecture allows for nearly two inches of additional rear legroom and a larger trunk, features that buyers looking for a budget Audi S4 may appreciate more than will those craving a neo-rally car.

Aside from a stiffer suspension, Subaru quickened the steering and, even though the WRX has good steering feel from its electrically assisted rack, Subaru is outfitting the STI with hydraulic power steering to eke out a bit more sensitivity.

A trio of limited-slip differentials and the six-speed manual gearbox get called back for duty in the new STI. As with the WRX, a brake-based torque-vectoring system for the front axle should reduce low-speed understeer, a trait that plagued previous STIs.

Subaru is keeping schtum on the curb weight, but if the ’15 WRX is any indication, it should gain about 50 pounds, for a total of around 3450. Acceleration will be close to the outgoing STI’s: a zero-to-60 time in the low fives and a mid-13-second quarter.

The less powerful WRX may prove to be quicker than the STI to 60 mph because the STI likely will require two shifts to hit the mark while the WRX gets to 60 mph in second gear. We do expect the STI to scurry around a track more quickly than the WRX thanks to its 37 extra horses and a sportier chassis tune.

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When STIs hit dealerships this month, a base one will begin just beyond where the WRX ends, or at roughly $36,000. Early adopters will enjoy the launch-edition STI that bundles gold-painted BBS wheels, blue interior trim, and a short-throw shifter. Just 1000 will be made, and the word is that Subaru won’t ever again offer factory gold wheels. This is part of the effort to move the STI away from its tobacco-sponsored racing origins. Figure the competition for the launch edition, like the car itself, to be fierce.